#footer{
    /*background-image: url("写真 (3).jpg");*/
    background-color: black;
    width: 1440px;
    margin: 0 auto;
    height: 510px;
    /*background-color: orange;*/
    position: relative;
    top: 120px;
    background-repeat: no-repeat;

}
.foot_t{
    width: 467px;
    height: 511px;
    background-color: rgba(0,0,0,0.8);
    background-repeat: no-repeat;
    font-size: 18px;
    position: relative;
    border:1px solid black;
    float: left;
}
#zuo_boby{
    width: 380px;
    height: 285px;
    /*background-color: #00bfff;*/
    color: #e9ecef;
    padding: 0 15px;
    margin-top: 100px;
    margin-left: 70px;
}
.tubiao{
    width: 20px;
    height: 20px;
    border-radius: 10px;
}
#mid_boby{
    width: 380px;
    height: 285px;
    /*background-color: deepskyblue;*/
    color: #e9ecef;
    font-size: 20px;
    margin-top: 100px;
    position: relative;
    margin-left: 50px;
}
#mid_boby>ul{
    list-style-type: none;/*去圆点*/
    padding: 0; /*去掉字带的40像素内边距*/
    overflow: hidden;/*解决所有子元素全部浮动导致的显示异常*/
    margin: 0;
}
#mid_boby>ul{
    width:143px ;
    height:238px ;
}
.lianjie{
    font-size: 15px;
    text-decoration: none;
}
#you_boby{
    width: 380px;
    height: 285px;
    font-size: 18px;
    /*background-color: deepskyblue;*/
    color: #e9ecef;
    margin-left: 50px;
    margin-top:100px;
}
a:visited{
    color: #e9ecef;
}
a:hover{
    color: darkorange;
}